MSS

The method according to Mueller, Schliesing & Soldner (MSS) works very similar to the method of Rogers,
which may cause the additional requirement of minimum levels but may also lead to a subsequent detection of faults.
The fifth MSS ratio CO/CO2 is only valid for the greater involvement of cellulose and was therefore disregarded here.

 

MSS

Gas ratio

C2H2/C2H6

H2/CH4

C2H4/C2H6

C2H4/C3H6

CO2/CO

< 0,1

0 0 0 0 1

0,1 … 1

1 0 0 1 1

1 … 3

1 1 1 2 1

> 3

2 2 1 3 0

>= 10

2 3 1 3 2

Nr. Fault          
1 Normal 0 0 0 0 0
2 Discharge (high energy density) 2 1 1 2/3 1
3 Discharge (low energy density) 2 2 1 2/3 1
4 Partial discharge (high energy density) 1 3 0 n.i. 0
5 Partial discharge (low energy density) 0 3 0 n.i. 0
6 Thermal fault T < 300°C 0 0 0 1 2
7 Thermal fault 300°C - 1000°C 0 0 1 2 2
8 Thermal fault T > 1000°C 1 0 1 2/3 2
9 Thermal fault + discharge 1 1 1 2 2
10 Thermal fault + partial discharge 0 3 1 2 2